One of my friends is having problems (at only 50,000 Km - 31,000 Mi) with his Lexus IS250 Direct Injection engine. The problem appears to be a combination of low piston ring tension plus intake valve carbon deposit formation.
The dealer is taking care of it under warrantee (including replacing the rings) but you have to wonder how much trouble there's going to be over the life of the vehicle.
Makes me wonder whether I want to have anything to do with DI engines. I know DI offers improved fuel economy but that could easily be offset by high repair costs.
Has anyone here put substantial miles on a DI engine without problems? If so, what vehicle and what driving conditions?
Ecotourist
The dealer is taking care of it under warrantee (including replacing the rings) but you have to wonder how much trouble there's going to be over the life of the vehicle.
Makes me wonder whether I want to have anything to do with DI engines. I know DI offers improved fuel economy but that could easily be offset by high repair costs.
Has anyone here put substantial miles on a DI engine without problems? If so, what vehicle and what driving conditions?
Ecotourist